Tomoki joins brothers Koki and Daiki in the world title belt club. This is the first time three brothers have won major world championship belts. Koki currently holds the WBA bantamweight title. Daiki formerly held the WBA flyweight title and will meet Rodrigo Guerrero for the vacant IBF super flyweight title on September 3 in Japan. If Daiki wins that fight, all three brothers would be active world champions.